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      What If Show
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      Earth

      What If Aliens Brought Life to Earth?

      August 25, 2021
      Earth

      What If a Megalodon Shark Fought the Kraken?

      June 3, 2021
      Earth

      What If You Fell Into the Deepest Hole on Earth?

      December 12, 2019
      Body

      6 Ways Humans Might Evolve In Next 1,000 Years

      August 12, 2025
      Body

      What If We Had No Hair?

      March 27, 2021
      HTS MSN

      One Person Dies Every Day Falling Down Stairs, and Your Home Has Even More Dangers

      Home is supposed to be the place where you feel safest. Yet ordinary household activities can sometimes lead to serious accidents, especially when people become...

      MSN New, Cosmos

      Left in Space: 12 of the Strangest Things Humans Left in Space

      During the Apollo missions in the 1960s, astronauts collected lunar rocks to bring back to Earth, but to lighten their cargo, they left 96 bags of urine and feces on the...

      Cosmos

      What If a Blazar Entered Our Solar System?

      We’ve thrown a lot of disasters at Earth over the years: from asteroids and aliens, to the Sun’s death. But hey, the Universe is a dangerous place, and we’re not...

      Earth

      What If Earth Was Half Land and Half Water?

      Imagine Earth with an even 50/50 split between continents and oceans. Our planet covered half by land half by water. How would this change the planet as you know it...

      MSN New, Cosmos

      The Moon Is Shrinking Earth to a Quarter of Its Gravity, and Our Air Is Slipping Away

      Our atmosphere stays where it is for one simple reason. Earth is heavy enough to hold it down. Take that mass away and the air begins drifting off into space, quietly...

      MSN New, Earth

      A Full Year of Nonstop Rain Would Reshape the World Fast

      Flooding, devastation, and disease. What could all these awful things have in common? Rain. And lots of it. We’re not talking April showers here. So, imagine a...

      MSN New, Cosmos

      What If Voyager 1 Crashed on an Alien Planet?

      Voyager 1 is on a journey that will outlast civilizations, outlive the Sun’s familiar neighborhood, and eventually drift into regions of space no human made object has...

      MSN New, Earth

      The Hidden Viking Settlement Found in North America

      Nearly 500 years before Christopher Columbus sailed across the Atlantic, another group of fearless explorers had already reached North America. At the very edge of the...

      MSN New, Cosmos

      What If Every Planet in the Solar System Could Support Life?

      Make room, earthling. We’re moving the other planets in our Solar System into our planetary neck of the woods. Would all the planets fit into this Goldilocks zone? What...

      MSN New, Cosmos

      What Would Happen If You Drank a Glass of Moon Water?

      Would you drink water that was extracted from the Moon? With NASA’s recent discovery of water on the Moon’s surface, it might become a more common practice...

      MSN New, Earth

      A Certain Snake Can Do Something No Snake Should Be Able To

      What would you do if you grabbed a tree branch and suddenly realized it was not a branch, but a snake? Now imagine that snake launching itself directly toward you...

      Cosmos

      What If You Were Alive During the Big Bang?

      In the beginning, there was nothing. Well, except for you. And the Big Bang. What would the first moments of the Universe be like? What would happen over the next...

      Technology

      What If Every Home Had a 3D Printer?

      On average, over 8000 people die each year in the U.S. because they can’t get an organ transplant. What if we could actually rebuild our failing organs? That...

      MSN New, Humanity

      Frostbite vs. Heatstroke: Which One Is Worse?

      Extreme temperatures can push the human body far beyond its limits. Whether someone is trapped in freezing conditions or exposed to intense heat, the consequences can...

      MSN Aperture, Humanity

      The Strangest Question at the End of the Universe

      The year is 2061, and two engineers are arguing about the end of the universe. Can entropy, the slow universal decay of everything into disorder, ever be reversed? Can...

      MSN New, Earth

      Secret Mayan Megacity Has Been Discovered

      A remarkable archaeological discovery hidden beneath the dense rainforests of Guatemala is changing what experts know about the ancient Maya civilization. Using advanced...

      HTS MSN

      A Tank Ran Over His Car Twice, but He Was Still Alive

      A loud explosion wakes you up in the middle of the night. You look out the window and see a missile hit a building across the street. The neighborhood you grew up in, is...

      MSN New, Cosmos

      A Planet the Size of a House Sounds Perfect. Until You Try to Live There

      Would you ever want to buy your own planet? Even if it was just the size of a house? It could be the perfect vacation spot! Unbeatable privacy and breathtaking views...

      HTS MSN

      The Flight That Should Have Never Happened: The Juliane Koepcke Story

      Imagine boarding a one hour flight with your mother on Christmas Eve. You’re 17 years old. The holidays are here. In just a little while, you’ll be...

      HTS MSN

      What You Should Never Do on an Airplane

      You’re halfway through your flight when you start feeling nauseous. You don’t usually get airsick. But today you’re feeling terrible. What...

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      What If is presented by Underknown, a production company creating a variety of short-doc series that search for the underlying truth of how our world operates and how it came to be. Our shows take you to the frontiers of science and make the most complex ideas and theories entertaining and accessible.

      Popular What Ifs

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